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註冊 2006-10-2
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硬碟I/O測試指令

Disk I/O 測試指令:

請將下面內容貼入 io-test.sh 檔案中!!
Loop --> 執行 10萬次
Count --> DD一百次1MB大小, 產生 100MB 的檔案
兩次之間休息2秒

#!/bin/bash

logfile='/tmp/io-test.log';
loop=100000
count=100
bs=1M
sleep=2

if [ -f $logfile ]; then
      rm -rf $logfile
fi

for ((i=0; i<=$loop; i=$i+1 ))
do
            rm -rf /var/lib/mysql/dd-test-WRITE
            rm -rf /var/lib/mysql/dd-test-WRITE1
            echo "===============================================================";
            echo "[$i] Perform the WRITE test..... [bs=$bs count=$count]";
            date >> $logfile;
            dd if=/dev/zero of=/var/lib/mysql/dd-test-WRITE bs=$bs count=$count 2>> $logfile;
            sync; sleep $sleep;

            echo "[$i] Perform the READ test.....  [bs=$bs count=$count]";
            dd if=/var/lib/mysql/dd-test-WRITE of=/dev/null bs=$bs count=$count 2>> $logfile;
            sync; sleep $sleep;

            echo "[$i] Perform the READ-WRITE test..... [bs=$bs count=$count]";
            dd if=/var/lib/mysql/dd-test-WRITE of=/var/lib/mysql/dd-test-WRITE1 bs=$bs count=$count 2> $logfile;
            sync; sleep $sleep;
            date >> $logfile;
done

2010-9-30 15:20


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